🌦️ Seasonal weather + riding expectations

• Typical temps: ~11 °C average 
• Usually rideable early season thanks to low elevation 
• Occasional rain, damp rock walls, and debris from winter storms.

• Avg temp ~18 °C 
• Heat can be intense on rock-wall sections; climbs can feel “overheated” in afternoon sun 
• Narrow road → traffic stress on weekends.

• Avg ~10 °C 
• Often stable, clear air and great views.
• Leaves + damp corners can make descents slippery.

• Avg ~2 °C 
• Officially the route is open year-round but only if snow/weather allow 
• Snow or ice may temporarily block access; closures are usually temporary (maintenance or conditions), not seasonal. 

🚧 Closure & accessibility notes

• No fixed winter closure schedule — it’s condition-based. 
• Occasional temporary closures happen for road works or inspections (example: tunnel closure for one day in Oct 2025). 

⚠️ Hazards specific to cyclists

• Very narrow balcony road sections 
• Short tunnels cut into rock 
• Heat reflection from rock face on sunny days 
• Limited guardrails above lake in places 

🧭 Best months to ride

• May–June → fresh air + quiet roads
• September–October → stable weather + views

🧾 Short summary

• Low-altitude Alpine pass (650 m) → rarely fully closed seasonally.
• Rideable most of the year if no snow/ice.
• Best seasons: late spring and early autumn.
• Biggest risks: heat in summer afternoons and occasional winter ice.